I don't understand how you can say that Shields wasn't an Ace. He was third behind Kershaw and Wainwright in innings pitched, had a 3.15 ERA so it's not as though that's all he did was "eat innings". According to Fangraphs, Shields was 12th in WAR among starting pitchers. It always seems as though you just don't want to give this guy credit. Is this all about FIP or something?